Mica Sheet

Mica Sheet

Key Characteristics of Mica

  • Colour: muscovite (white) micaand phlogopite (green) mica.
  • Sheet Size: 1000 x 1200 mm
  • Thicknesses: 01mm - 50mm (depending on grade)
  • Density: 2.6 – 3.2 gm/cm3
  • Temperature Range:  500°C to 1000°C (depending on grade taken)
  • Flame resistance: Flame retardant and non-flammable
  • Chemical resistances: inert to water, most acids (excepthydrofluoric and concentrated sulphuric), alkalis, conventional solvents and oil.

Full technical data can be supplied upon request,
or downloaded from our online portal.

Mica Sheet

Mica sheets are an integral part of the electrical insulation materials offered by ASG. Our commitment to sourcing materials and products from leading global suppliers guarantees a diverse array of options, precisely tailored to meet specific application requirements. Mica sheets, among the wide array of electrical insulation materials available, offer unique properties to meet various demands in the field.

Mica sheets are renowned for their versatility, making them suitable for a wide range of electrical applications. They excel in providing electrical insulation, thermal resistance, and durability. These key features make them a favorite in many industries.

Crafting Mica sheets involves meticulous bonding of layers of mica paper together using a resin. This bonding process allows the creation of either rigid or flexible boards, providing flexibility in choosing the right material for your application. This process ensures a reliable and sturdy end product.

ASG offers Mica sheets in a variety of thicknesses, ranging from an ultra-thin 0.10mm to a substantial 50mm. This extensive range allows you to select the perfect thickness to meet your specific requirements. Whether you need a thin sheet for delicate electronic components or a thicker one for more robust insulation, we've got you covered.

Mica sheets are available in generous sheet sizes of up to 1000 x 1200 mm, ensuring flexibility in accommodating both small and large-scale projects. Whether you're working on a small, intricate project or a large industrial application, we can provide sheets that fit your needs.

ASG's on-site conversion facilities are equipped to transform Mica sheets into finished products tailored to your specific requirements. These finished products can include washers, gaskets, pads, or strips. With our conversion capabilities, you get precisely what you need, without the hassle of additional processing.

In addition, ASG offers lamination options for Mica sheets. You can choose to receive sheets either plain or laminated. Laminated versions may include the addition of self-adhesives or foils to enhance their functionality for specific applications. This further demonstrates our commitment to providing comprehensive solutions for your electrical insulation needs.

Product Enquiry

For information on Mica Sheet please complete the following quick enquiry or call us on +44(0)1384 252555.

    What are Mica Sheet

    Mica materials are primarily produced in sheet form, with rigid sheets being the most common. These Mica sheets serve as versatile foundations for creating a variety of components, including washers, gaskets, strips, and pads. One of their key functions is to restrict the flow of electric current while providing solid support to electrical conductors, all while preventing any unwanted passage of the current.

    Mica, as a mineral, is widely used and belongs to a large group of alumina, iron, calcium, magnesium, and alkaline mineral silicates. It is available in two mineral types, Muscovite and Phlogopite, and can be found in a choice of rigid or flexible sheet forms, allowing for the selection of the ideal material for a specific application.

    As stockists and converters of Mica, we offer a range of solutions to cater to various customer needs. We can provide pre-cut parts to your specifications, or you have the option to acquire full sheets of Mica. This approach gives you the autonomy to cut your own components as needed, optimizing flexibility and efficiency in your processes. Whether you require ready-made components or prefer the freedom to cut your own, ASG has you covered with our extensive Mica offerings.

    Why use Mica Sheet

    Sheets of Mica and the derived products play an indispensable role in electrical insulation. Their primary function involves creating a robust barrier that effectively restricts the flow of electrical current. This function is vital to ensure the safety of electrical conductors, preventing inadvertent contact with people or tools during activities like installation, repairs, and the operation of electrical devices.

    Mica sheets offer a comprehensive suite of qualities that enhance their applicability across a diverse range of scenarios. These sheets excel in thermal resistance, electrical insulation, and flame resistance. In addition to these properties, they feature rapid heat transfer capabilities and mechanical strength. Such attributes are particularly valuable in situations where the management of excess heat is crucial. Notably, Mica is a preferred choice for applications such as fire door linings and heat shields, especially in the transportation industry, including vehicles and aircraft, where safety considerations are of paramount importance.

    What's more, Mica sheets exhibit versatility not only in their applications but also in their usability. They prove to be highly convenient when there's a need to cut a small quantity of products, like gaskets or washers. Whether it's for producing small strips, creating samples for demonstration purposes, or catering to customers who prefer to cut their components as per their specific requirements, Mica sheets readily adapt to diverse scenarios. ASG ensures that you have easy access to this versatile material, enabling you to meet your unique demands with precision and efficiency.

    Benefits of Mica sheet

    • Heat Resistance up to 1200ºC (rigid Phlogopite)
    • Excellent flexural strength and easy to be punched and machined
    • Excellent dielectric strength and low electrical conductivity.
    • Incombustible
    • Asbestos, and halogen free
    • Excellent resistance to acids (excluding sulphuric acid), bases, mineral oils and solvents

    Other Types of Electrical Insulation Materials Available

    Advanced Seals & Gaskets proudly collaborates with a vast array of esteemed material manufacturers, extending a multitude of choices to our valued customers. This collaboration ensures that we are well-equipped to provide solutions for nearly every conceivable application. Among our most sought-after alternatives to Mica are:

    Epoxy Glass: A vibrant green material, Epoxy Glass boasts impressive mechanical strength, and it is characterized by its excellent chemical, electrical, and radiation resistance. With low moisture absorption and a broad working temperature range extending up to +120℃, this material is ideal for demanding environments.

    Kapton: Kapton takes the form of a polyamide film renowned for its impressive combination of mechanical and tear strength. In addition to these attributes, Kapton exhibits exceptional chemical, electrical, and thermal properties, making it an outstanding choice for gaskets that must withstand extreme temperatures and vibrations in rigorous environments.

    Leatheroid: This grey-blue paper gasket material, occasionally referred to as Elephantide, holds a significant place within the electrical industry. It is valued for its ability to insulate hot elements, making it a crucial asset for safeguarding against electrical hazards.

    MYLAR: MYLAR stands as a remarkably robust and flexible polyester film. It excels as an insulation material, boasting exceptional dielectric strength and moisture resistance, rendering it an invaluable choice for numerous insulation applications.

    Nomex: Nomex offers incredible versatility and can be crafted into Nomex paper or Nomex board, both of which exhibit remarkable resilience against high temperatures. These materials are characterized by their substantial mechanical and dielectric strength, making them indispensable for various electrical equipment and applications.

    Presspahn: Featuring a rich brown hue, Presspahn is a material produced from kraft wood pulp. It stands out for its excellent physical and mechanical properties and is commonly utilized as an electrical insulation material.

    PVC: PVC, a resilient material, stands out with its exceptional toughness, lightweight nature, and resistance to abrasion, chemicals, and moisture. Moreover, it boasts robust dielectric strength, rendering it an ideal choice for electrical insulation applications.

    These diverse alternatives to Mica provide our customers with a wide range of options, enabling them to select the materials that best suit their unique requirements and preferences. With this comprehensive array of materials at their disposal, our customers can confidently address their specific application needs, ensuring the highest level of performance and reliability.

    Advantages of Using Mica sheet

    Mica materials, celebrated for their extraordinary attributes, prove to be invaluable across a wide spectrum of applications. These exceptional qualities include resistance to high temperatures, chemical robustness, and overall durability. Consequently, Mica sheets exhibit remarkable versatility, finding utility in diverse scenarios, from insulating furnaces to fabricating automotive gaskets. They also serve as essential components in fire protection systems and as electrical barriers, effectively mitigating electrical hazards.

    Mica sheets are primarily available in two distinct types: Muscovite and Phlogopite. Muscovite, distinguished by its superior dielectric strength and insulating characteristics, enjoys extensive application in various electrical devices and systems. It ensures the safe and efficient operation of electronic equipment, safeguarding against electrical risks. In stark contrast, Phlogopite Mica stands out for its exceptional resistance to high temperatures, rendering it indispensable in settings characterized by extreme heat. Notably, Phlogopite exhibits minimal electrical conductivity and is adaptable, coming in both flexible and rigid forms, making it a suitable choice for a range of applications.

    Phlogopite Mica's high thermal stability holds particular significance. Its low thermal conductivity and ability to endure temperatures up to 1200°C play pivotal roles in industrial applications where temperatures reach remarkably high levels. In such scenarios, proper insulation for machinery and equipment becomes critical, ensuring both safety and operational efficiency.

    Furthermore, both Muscovite and Phlogopite Mica share a common trait: their dielectric properties. These properties signify their low electrical conductivity, making them ideal choices for use as electrical insulators in electronic devices. Whether integrated into circuit boards, industrial machinery, automotive components, or medical devices, Mica emerges as a key component in enhancing the safety and effectiveness of these vital technologies.

    Have a Question About Mica sheet

    Please contact us using the form below or by calling us on +44(0)1384 252555.